Agenda. Background and cloud portability and interoperability concepts Distributed computing reference model. development Conclusions

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1 Dr Thomas Lee 14 August 2013, 6 th Meeting of Working Group on Cloud Computing Interoperability Standards, Expert Group on Cloud Computing Services and Standards, Office of the Government Chief Information Officer, Hong Kong SAR Government

2 Agenda Background and cloud portability and interoperability concepts Distributed computing reference model Recommendations for current practice and standards development Conclusions 14-Aug th WGCCIS Meeting 2

3 Agenda Background and cloud portability and interoperability concepts Distributed computing reference model Recommendations for current practice and standards development Conclusions 14-Aug th WGCCIS Meeting 3

4 Background Open Group Guide: Cloud Computing Portability and Interoperability by The Open Group, April 2013 Explains major cloud portability and interoperability issues Recommends customers on how best to achieve portability and interoperability when using Recommends suppliers and standards bodies on how standards and best practices should evolve Cloud computing enables massive economic activities and makes significant contribution to GDP Like Internet yet with even greater potential Potential will not be realized without portability and interoperability Growth of the Internet is largely due to high level of portability and interoperability 14-Aug th WGCCIS Meeting 4

5 Architecture for Portability / Interoperability Business architecture Business strategy, organization, functions, business processes and information needs Information systems architecture Application architecture Capabilities that provide business functions and manage data assets Data architecture Logical / physical data assets, data management resources Technology architecture Platform services, logical / physical technology components Application Business Technology Data 14-Aug th WGCCIS Meeting 5

6 Cloud Service Models Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 6

7 Cloud Portability Data portability Reuse of data components across applications Application portability Reuse of application components across PaaS s Platform portability Platform source portability: reuse of platform components across IaaS s Machine image portability: reuse of bundles of platform + application + data (i.e., VM image) across IaaS s 14-Aug th WGCCIS Meeting 7

8 Platform Portability Platform source portability Machine image portability Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 8

9 Cloud Interoperability Application interoperability Between different / identical application components, e.g., hybrid cloud Data synchronization between components in different clouds Platform interoperability Between platform components, e.g., database Set-up and transfer of application session info: User ID Authentication level User locale and preference 14-Aug th WGCCIS Meeting 9

10 Cloud Interoperability (Cont ) Management interoperability On-demand self-service management of different clouds (SaaS, PaaS, IaaS) E.g., manage cloud services together with in-house systems using generic system management COTS Publication and acquisition interoperability Between marketplaces, app stores, etc. Standard interfaces to different stores 14-Aug th WGCCIS Meeting 10

11 Agenda Background and cloud portability and interoperability concepts Distributed computing reference model Recommendations for current practice and standards development Conclusions 14-Aug th WGCCIS Meeting 11

12 Distributed Computing Reference Model Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 12

13 Applications Mapping to DCRM Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 13

14 PaaS and IaaS on DCRM Source: Open Group Guide - Cloud Computing Portability and Interoperability PaaS: IaaS: 14-Aug th WGCCIS Meeting 14

15 Portability / Interoperability Interfaces 15 Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting

16 Portability / Interoperability Interfaces (Cont ) Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 16

17 Security of WS-I and HTTP WS Styles Source: Open Group Guide - Cloud Computing Portability and Interoperability 14-Aug th WGCCIS Meeting 17

18 Agenda Background and cloud portability and interoperability concepts Distributed computing reference model Recommendations for current practice and standards development Conclusions 14-Aug th WGCCIS Meeting 18

19 Application Design Principles Loose coupling Service-orientation Stable interfaces Described interfaces Human / machine readable descriptions Use of marketplaces (a.k.a. app stores) REST (Representational State Transfer) BASE (Basically Available, Soft State, Eventual Consistency) c.f. ACID (Atomicity, Consistency, Isolation Durability) 14-Aug th WGCCIS Meeting 19

20 Recommendations Problem areas: Platform-platform / application-platform interfaces Service descriptions and management interfaces Data models, machine image formats Loose coupling, service-orientation, stable and described interfaces, marketplaces, REST, BASE Each area covers: Problem summary Recommendations for current practice Recommendations for standards development 14-Aug th WGCCIS Meeting 20

21 Application-Platform Interfaces Problem summary Various programming languages to be chosen for the interface No agreement on what functionality is needed No commonly accepted application-platform interface standards Recommendations for current practice Enterprises should seek to use cloud platforms with vendor- independent programming interfaces PaaSvendors stating that they support.net or J2EE should say which versions they support Recommendations for standards development The industry should identify best practice in use of direct HTTP and JSON, including means of authentication and access control (such as OAUTH), and develop standard profiles for interoperability between service platforms using this approach. 14-Aug th WGCCIS Meeting 21

22 Machine Image Formats Problem summary A standard machine image format makes portability possible across different infrastructure service providers, as well as across infrastructure services of a single provider. The DMTF OVF standard is designed to meet the need for a machine image format standard. Recommendations for current practice Enterprises developing cloud infrastructure services should evaluate the OVF standard and support it if feasible. Enterprises developing cloud management systems should evaluate the OVF standard and support it if feasible. Enterprises procuring cloud infrastructure services or cloud management systems should evaluate the OVF standard and look for support for it as appropriate. Recommendations for standards development The industry should work to ensure that the OVF standard is and remains fit for purpose, and to encourage its use. 14-Aug th WGCCIS Meeting 22

23 BASE Transactions Problem summary There is a need for robust and scalable services that are loosely-coupled and have stable interfaces that are easy to describe. Recommendations for current practice Applications should be designed using the Representational State Transfer (REST) style, though without insisting on its full rigor. 14-Aug th WGCCIS Meeting 23

24 Agenda Background and cloud portability and interoperability concepts Distributed computing reference model Recommendations for current practice and standards development Conclusions 14-Aug th WGCCIS Meeting 24

25 Conclusions Important technical resource for enterprise users and cloud vendors to understand different aspects and current status of cloud portability and interoperability May serve as a base for enterprises to develop their own cloud adoption strategy Cloud vendors should develop products that can address these portability and interoperability issues In the long run, these features will become a competitive advantage Portability and interoperability will become a determinant of success when the cloud technology becomes mature Like what happened to the Internet / Web 14-Aug th WGCCIS Meeting 25

26 Thank You

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